<HTML><HEAD><TITLE>lp_var_get(+Handle, +Var, ++What, -Value)</TITLE>
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<H1>lp_var_get(+Handle, +Var, ++What, -Value)</H1>
Obtain information for an individual solver problem variable Var.
<DL>
<DT><EM>Handle</EM></DT>
<DD>Handle to a solver state
</DD>
<DT><EM>Var</EM></DT>
<DD>A solver problem variable for Handle
</DD>
<DT><EM>What</EM></DT>
<DD>Specification for information wanted (atom)
</DD>
<DT><EM>Value</EM></DT>
<DD>Returned value of What
</DD>
</DL>
<H2>Description</H2>
<P>
   Retrieve information about the (logically) most recent solver state and
   results related to a particular variable, for the solver state
   represented by Handle. Fails if no solution has been computed yet. What
   can take the same values as those in eplex_var_get/3.
<H3>Exceptions</H3>
<DL>
<DT><EM>(4) instantiation fault </EM>
<DD>Handle is not instantiated.
<DT><EM>(5) type error </EM>
<DD>Handle is not a compound term.
<DT><EM>(6) out of range </EM>
<DD>What is not a valid value.
<DT><EM>(6) out of range </EM>
<DD>Var is not a problem variable for Handle.
<DT><EM>(6) out of range </EM>
<DD>What is unavailable; the information was not requested at solver setup.
<DT><EM>(40) stale object handle </EM>
<DD>Handle not valid: solver state had been destroyed by cleanup
</DL>
<H2>See Also</H2>
<A HREF="../../lib/eplex/eplex_var_get-3.html">eplex_var_get / 3</A>
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